To fix issue #216141, I need to be able to remove the default "All Files" filter but this is currently not possible via the FileChooserBuilder class. This is also the reason why I am filing it a defect and not as an enhancement.
I know that I could simply createFileChooser() and then remove the filter but if one looks at the showOpenDialog() method, it is clear that this method should be called (to correctly open the native file chooser etc.). Moreover, this API change is very small.
Thanks, I will attach a patch.